Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 7nus_D.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 4.A OG ASP 3.A OD1 no hydrogen 2.720 N/A ASN 8.A N SER 5.A OG no hydrogen 2.901 N/A ASN 8.A ND2 SER 4.A OG no hydrogen 2.944 N/A ARG 9.A NH2 ASN 8.A OD1 no hydrogen 2.994 N/A